W. Dollken & Co. GmbH
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Aug 13, 2009 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 89 Total Citation Count
- Jan 13, 1988 Earliest Filing
- 8 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
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Recent Publications
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Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5088909 Apparatus for extruding a marbleized synthetic-resin strandExpiredFeb 19, 91Feb 18, 92[B29C]
4921414 Extrusion apparatus for producing marbeleized thermoplastic extrusionsExpiredMar 14, 88May 01, 90[B29C]
4834639 Apparatus for making a thermoplastic product from a base plastic material and at least one marbling additive materialExpiredJan 13, 88May 30, 89[B29C]
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